rtc_clk_cal: make compatible with the ESP32
This commit is contained in:
parent
490bf29767
commit
383ace9443
|
@ -38,6 +38,19 @@
|
|||
*/
|
||||
uint32_t rtc_clk_cal_internal(rtc_cal_sel_t cal_clk, uint32_t slowclk_cycles)
|
||||
{
|
||||
/* On ESP32S2, choosing RTC_CAL_RTC_MUX results in calibration of
|
||||
* the 90k RTC clock regardless of the currenlty selected SLOW_CLK.
|
||||
* On the ESP32, it used the currently selected SLOW_CLK.
|
||||
* The following code emulates ESP32 behavior:
|
||||
*/
|
||||
if (cal_clk == RTC_CAL_RTC_MUX) {
|
||||
rtc_slow_freq_t slow_freq = rtc_clk_slow_freq_get();
|
||||
if (slow_freq == RTC_SLOW_FREQ_32K_XTAL) {
|
||||
cal_clk = RTC_CAL_32K_XTAL;
|
||||
} else if (slow_freq == RTC_SLOW_FREQ_8MD256) {
|
||||
cal_clk = RTC_CAL_8MD256;
|
||||
}
|
||||
}
|
||||
/* Enable requested clock (150k clock is always on) */
|
||||
int dig_32k_xtal_state = REG_GET_FIELD(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_DIG_XTAL32K_EN);
|
||||
if (cal_clk == RTC_CAL_32K_XTAL && !dig_32k_xtal_state) {
|
||||
|
|
Loading…
Reference in a new issue